“Flying mosquito syndrome” refers to the patient’s consciousness of mosquitoes flying in front of the eyes. The common reason is the patient vitreous clouding caused by, can also be due to age-related cataracts. And caused by a variety of vitreous clouding: uveitis uveitis can cause vitreous inflammatory clouding; intraocular hemorrhage can also cause vitreous clouding; and high myopia can also cause vitreous clouding; old age and physical deterioration can cause vitreous clouding and the performance of black shadows in front of the eyes, or eyes see “flying mosquitoes. The treatment of “flying mosquitoes” should be different according to the cause and use different methods. Or the use of liver and kidney method, or the use of nourishing Yin fire method, or the use of blood stasis method, some use the method of benefitting the eyes.